Daren, not sure if the others will fit but you could find it quite reasonable to just have uprated springs fitted, what area are you in?  London? Try Paddington Springs, or a local road spring seller, by the time you mess about with old springs and changing the spring eye bushes you might as well get new  / remanufactured ones with new bushes and just bolt them on.
                 Lez T
                
 February 2009